/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.netbeans.modules.db.explorer.dlg;

import java.awt.BorderLayout;
import java.util.Collections;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.SwingUtilities;
import org.netbeans.api.progress.ProgressHandle;
import org.netbeans.api.progress.ProgressHandleFactory;

import org.openide.util.NbBundle;

import org.netbeans.modules.db.explorer.DatabaseConnection;

public class SchemaPanel extends javax.swing.JPanel {

    private ProgressHandle progressHandle;
    private JComponent progressComponent;

    /**
     * Creates a new form SchemaPanel
     * 
     * @param dbcon instance of DatabaseConnection object
     */
    public SchemaPanel(ConnectionDialogMediator mediator, DatabaseConnection dbcon) {
        initComponents();
        initAccessibility();

        ConnectionProgressListener progressListener = new ConnectionProgressListener() {
            @Override
            public void connectionStarted() {
                startProgress();
            }
            
            @Override
            public void connectionStep(String step) {
                setProgressMessage(step);
            }

            @Override
            public void connectionFinished() {
                stopProgress(true);
            }

            @Override
            public void connectionFailed() {
                stopProgress(false);
            }
        };
        mediator.addConnectionProgressListener(progressListener);
    }

    private void initAccessibility() {
        schemaLabel.getAccessibleContext().setAccessibleDescription(NbBundle.getMessage (SchemaPanel.class, "ACS_SchemaDialogTextA11yDesc")); //NOI18N
        schemaComboBox.getAccessibleContext().setAccessibleName(NbBundle.getMessage (SchemaPanel.class, "ACS_SchemaDialogTextComboBoxA11yName")); //NOI18N
        commentTextArea.getAccessibleContext().setAccessibleName(NbBundle.getMessage (SchemaPanel.class, "ACS_SchemaPanelCommentA11yName")); //NOI18N
        commentTextArea.getAccessibleContext().setAccessibleDescription(NbBundle.getMessage (SchemaPanel.class, "ACS_SchemaPanelCommentA11yDesc")); //NOI18N
        connectProgressPanel.getAccessibleContext().setAccessibleName(NbBundle.getMessage (SchemaPanel.class, "ACS_ConnectionProgressBarA11yName")); //NOI18N
        connectProgressPanel.getAccessibleContext().setAccessibleDescription(NbBundle.getMessage (SchemaPanel.class, "ACS_ConnectionProgressBarA11yDesc")); //NOI18N
        this.getAccessibleContext().setAccessibleName(NbBundle.getMessage (SchemaPanel.class, "ACS_GetSchemasPanelA11yName")); //NOI18N
        this.getAccessibleContext().setAccessibleDescription(NbBundle.getMessage (SchemaPanel.class, "ACS_GetSchemasPanelA11yDesc")); //NOI18N
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {
        java.awt.GridBagConstraints gridBagConstraints;

        commentTextArea = new javax.swing.JTextArea();
        schemaLabel = new javax.swing.JLabel();
        schemaComboBox = new javax.swing.JComboBox();
        connectProgressPanel = new javax.swing.JPanel();
        progressMessageLabel = new javax.swing.JLabel();
        progressContainerPanel = new javax.swing.JPanel();

        setMinimumSize(new java.awt.Dimension(163, 163));
        setPreferredSize(new java.awt.Dimension(163, 1));
        setLayout(new java.awt.GridBagLayout());

        commentTextArea.setEditable(false);
        commentTextArea.setFont(javax.swing.UIManager.getFont("Label.font"));
        commentTextArea.setLineWrap(true);
        commentTextArea.setText(org.openide.util.NbBundle.getMessage(SchemaPanel.class, "MSG_SchemaPanelComment")); // NOI18N
        commentTextArea.setWrapStyleWord(true);
        commentTextArea.setDisabledTextColor(javax.swing.UIManager.getColor("Label.foreground"));
        commentTextArea.setEnabled(false);
        commentTextArea.setOpaque(false);
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridwidth = 3;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 0, 11);
        add(commentTextArea, gridBagConstraints);

        schemaLabel.setLabelFor(schemaComboBox);
        org.openide.awt.Mnemonics.setLocalizedText(schemaLabel, org.openide.util.NbBundle.getMessage(SchemaPanel.class, "SchemaDialogText")); // NOI18N
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 0, 0);
        add(schemaLabel, gridBagConstraints);

        schemaComboBox.setToolTipText(org.openide.util.NbBundle.getMessage(SchemaPanel.class, "ACS_SchemaDialogTextComboBoxA11yDesc")); // NOI18N
        schemaComboBox.setEnabled(false);
        schemaComboBox.setPrototypeDisplayValue("wwwwwwwwww");
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(5, 5, 0, 5);
        add(schemaComboBox, gridBagConstraints);

        connectProgressPanel.setToolTipText(org.openide.util.NbBundle.getMessage(SchemaPanel.class, "ACS_ConnectionProgressBarA11yDesc")); // NOI18N
        connectProgressPanel.setLayout(new java.awt.BorderLayout(0, 5));

        org.openide.awt.Mnemonics.setLocalizedText(progressMessageLabel, " ");
        connectProgressPanel.add(progressMessageLabel, java.awt.BorderLayout.NORTH);

        progressContainerPanel.setMinimumSize(new java.awt.Dimension(20, 20));
        progressContainerPanel.setPreferredSize(new java.awt.Dimension(20, 20));
        progressContainerPanel.setLayout(new java.awt.BorderLayout());
        connectProgressPanel.add(progressContainerPanel, java.awt.BorderLayout.CENTER);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 2;
        gridBagConstraints.gridwidth = 3;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 11, 11);
        add(connectProgressPanel, gridBagConstraints);
    }// </editor-fold>//GEN-END:initComponents


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JTextArea commentTextArea;
    private javax.swing.JPanel connectProgressPanel;
    private javax.swing.JPanel progressContainerPanel;
    private javax.swing.JLabel progressMessageLabel;
    private javax.swing.JComboBox schemaComboBox;
    private javax.swing.JLabel schemaLabel;
    // End of variables declaration//GEN-END:variables

    public String getSchema() {
        Object schema = schemaComboBox.getSelectedItem();
        if (schema != null && !schema.toString().equals(NbBundle.getMessage (SchemaPanel.class, "TXT_NoSchema"))) //NOI18N
            return schema.toString();
        else
            return null;
    }

    /**
     * Determine if there are any schemas available
     * 
     * @return true if there are schemas, false otherwise
     */
    public boolean schemasAvailable()
    {
        // the schema combo box is enabled if there are schemas
        boolean available = schemaComboBox.isEnabled();
        
        return available;
    }
    
    public boolean setSchemas(List<String> items, String schema) {
        if (items == null) {
            items = Collections.emptyList();
        }
        schemaComboBox.removeAllItems();
        for (int i = 0; i < items.size(); i++)
            schemaComboBox.addItem(items.get(i));

        if (items.isEmpty()) {
            schemaComboBox.addItem(NbBundle.getMessage (SchemaPanel.class, "TXT_NoSchema")); //NOI18N
            schemaComboBox.setEnabled(false);
        } else
            schemaComboBox.setEnabled(true);

        if (items.size() == 1)
            //no or only one schema in the items
            return true;

        int idx = items.indexOf(schema);
        if (idx == -1)
            idx = items.indexOf(schema.toLowerCase());
        if (idx == -1)
            idx = items.indexOf(schema.toUpperCase());
        if (idx != -1) {
            schemaComboBox.setSelectedIndex(idx);
            // schema has been found in the items
            return true;
        }

        // schema has not been found in the items; index is set to the first item
        return false;
    }

    public void setComment(String msg) {
        commentTextArea.setText(msg);
    }
    
    private void startProgress() {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                progressHandle = ProgressHandle.createHandle(null);
                progressComponent = ProgressHandleFactory.createProgressComponent(progressHandle);
                progressContainerPanel.add(progressComponent, BorderLayout.CENTER);
                progressHandle.start();
                progressMessageLabel.setText(NbBundle.getMessage (SchemaPanel.class, "ConnectionProgress_Connecting"));
            }
        });
    }
    
    private void setProgressMessage(final String message) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                progressMessageLabel.setText(message);
            }
        });
    }

    /**
     * Terminates the use of the progress bar.
     */
    public void terminateProgress()
    {
        stopProgress(false);
    }
    
    private void stopProgress(final boolean connected) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                if (progressHandle != null)
                {
                    progressHandle.finish();
                    progressContainerPanel.remove(progressComponent);
                    // without this, the removed progress component remains painted on its parent... why?
                    progressContainerPanel.repaint();
                    if (connected) {
                        progressMessageLabel.setText(NbBundle.getMessage (SchemaPanel.class, "ConnectionProgress_Established"));
                    } else {
                        progressMessageLabel.setText(NbBundle.getMessage (SchemaPanel.class, "ConnectionProgress_Failed"));
                    }
                }
            }
        });
    }
    
    public void resetProgress() {
        progressMessageLabel.setText(" "); // NOI18N
    }
}
